<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>022-通用选择器.html</title>
	<style>
		/*p,div,span,h1{
			color: red;
		}*/
		*{
			color: red;
		}
	</style>
</head>
<body>
	<div>div</div>
	<p>p</p>
	<span>span</span>
	<h1>h1</h1>
</body>
</html>